Freight bracing apparatus



Oct. 5, 1965 P; N. lERICKSON ETAL FREIGHT BRACING APPARATUS 12Sheets-Sheel'I 1 Filed Nov. 15, 1960 Ocrt.v 5, 1965 P. N. ERICKSON ETALFREIGHT BRACING APPARATUS 12 Sheets-Sheet 2 Filed Nw. 15, 1960 ndmffv.7.

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' FREIGHT BRACING APPARATUS Y i2 Sheets-Sheet 4 Filed Nov. 15, 1960 Oct.15, l1965 P. vN. ERICKSON ETAL 3,209,707

FREIGHT BRACING APPARATUS 'Filed Nov. 15. 195o 12 Sheets-Sheet 5 Ot. 5,'1965 P. N. ERICKSON r-:TAL 3,209,707

FREIGHT BRACING APPARATUS 12 sheets-sheet s Filed Nov. 15, 1960` W5@ m?wm MM50 l as P. N. ERICKSON l-:TAL

A FREIGHT BRAGING APPARATUS oef. 5, 196s l .med Nov. 15. 1960 12sheets-sunsetv 7 0&5 19675 l -V P. N; ERICKSON ETAL 32099707 FREIGHTBRACING APPARATUS Ochs, 1965 l N. ERnzzK's'oN ETAAL- 3,209,707 A FREIGHTBBACISG APPARATUS 12 Sheets-Sheet 9 lFiled NOV. l5. 1960 und?? mmdwnm. uw myn@ www ww, Q 4 am 2?/ 7 ,111x M Nil W, i i/ i /5 4 f f i 5 ou. 196sFiled Nov. 15, 1960 ,r

P. N. ERICKSON ETAL 'FREIGHT BRACING APPARATUS gva.,

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12 sheets-'sheet 1o 5, 19675 i.l N. ERICKSON ETAL 3,209,707 'FREIGHTBRACING APPARATUS 12 Sheets-Sheet 12 Filed Nov. 15, lso -A 3,209,707FREIGHT BRACING APPARATUS Paul N. Erickson, Birmingham, .lohn P.Moorhead, Plymnuth, Henry L. Dunlap, Dearborn, and James A.

Lowing, Plymouth, Mich., assignors to Evans Products Company. Plymouth,Mich., a corporation of Delawal'e Filed Nov.l 15, 1960, Ser. No. 69,351

8 Claims. (Cl. 10S- 376) The present invention relates to apparatus forbracing freight in vehicles and is well adapted for use in thesupporting and bracing of freight in railway boxcars, highway-trucks,and the like. More particularly, the present invention relates toimproved freight bracing apparatus of the type including movablebulkheads or partitions and means for supporting the bulkheads in anassociated vehicle during movement between and for selectively securingthe bulkhead in plurality of positions in the vehicle.

Itis an object of; the present invention to provide an improved freightbracing apparatus of the above mentioned type having an improvedconstruction which is simple in design, economical of manufacture, andrugged,

reliable and efficient in operation, and which greatly facilitates theloading of railway boxcars and the like.

More specifically, it is an object of the present invention to providean improved freight bracing apparatus including an improved bulkhead,improved means for supporting the bulkhead for `movement in the boxcaror other vehicle, and including improved means for securing the bulkheadin a plurality of positions within the vehicle.

It is also an object of the present invention to provide improved meansfor supporting the bulkhead on the rail members, enabling the bulkheadto be moved to positions in which it entends longitudinally of thevehicle and closely adjacent to a side wall or side wall door of thevehicle without interference betweenv the rail members 'and meanssupporting the bulkhead on the rail members.

lt is also an object of thepresent invention to provide an improvedbulkhead construction which is light in weight, free of corrosionproblems, and rugged in construction, such that it can withstand thesevere shocks to which bulkheads of this type are subjected when used inrailway boxcars and the like. j

VIt is also an object of the present invention to provide an improvedfreight bracing apparatus of the above mentioned type in which the meansfor securing the bulkhead in place is actuated by a single handle, theoperation of which also is effective during the movement thereof to thelocked position to cause `at least the major portion of the bulkheadweight to be supported on the floor of the vehicle to relieve the meanssupporting the bulkhead on the rail members.

It is also an object of the present invention to provide an improvedfreight bracing apparatus of the above mentioned type for use in aboxcar having doors in the oppo-v site side walls thereof locatedgenerally centrally of the boxcar and including a pair of bulkheadsadapted to support freight loaded in the opposite ends of the car inwhich both of the bulkheads may be secured in position parallel to andgenerally aligned with one of the doors so that both ends of the car maybe loaded simultaneously. Other and more detailed objects of the presentinvention will be apparent from a consideration of the followingspecification, the appended claims and the accompanying drawingswherein:

FIGURE 1 is a broken transverse sectional view of arailroad'refrigerator car equipped with freight bracing apparatusembodying the present invention and showing the bulkhead thereofpositioned against nn end wall ofthe Cllr;

United States Patent O V3,209,707 Patented Oct. 5, 1965 ICE FIGURE 2 isa broken perspective view of the interior of :i railroad refrigeratorcar showing the freight bracing apparatus illustrated in FIGURE 1disposed with thejbulkhead thereof parallel to and adjacent one side ofthecar; FIGURE 3 is a broken and somewhat diagrammatic .plan view of theoor of a railroad refrigerator car showing the side and end portions ofthe car in broken .lines and representing diagrammatically in brokenlines disposed .parallel to and closely adjacent the railroad'reVfrigerator car door;

FIGURE 6 is enlarged broken longitudinal-sectional view showing an endportion of the crane rail of the freight bracing apparatus of thepresent invention;

FIGURE 7 is a broken horizontal sectional view of the structureillustrated in FIGURE 4 taken substantially along the line 7-7 thereofand having parts broken away;

FIGURE 8 is a broken enlarged elevational view showing a portion of thecrane railof the freight bracing apparatus of the present invention;

FIGURE 9 is a sectional view of the structure illustrated in FIGURE 4taken substantially alongthe line 9-9 thereof;

FIGURE 10 is a broken enlarged sectional view of the structureillustrated in FIGURE 1 taken substantially along the line 10-10thereof;

FIGURE 11 .is a broken sectional view similar to FIGURE 1() but showingthe bulkhead raised to relieve. the trolley beam of its weight;

FIGURE 12 is an elevational view, partially in section, of the carriageassembly employed in the present applicants freight bracing apparatusfor supporting the bulkhead on the trolley beam; ,Y

FIGURE 1 3 is an elevational view of the structure illustrated in FIGURE12 as viewed from the left-hand sidethereof; Y

FIGURE 14 is an enlarged broken plan view of one of the floor plateassemblies illustrated in FIGURE 1;

FIGURE 15 is a broken longitudinal sectional view of thestructureillustrated in FIGURE 14 taken substantially along the line 15-15thereof;

FIGURE 16 is a transverse sectional view of the structure illustrated inFIGURE 14 taken substantially along the line 16-16 thereof;

FIGURE 17 is a broken'enlarged transverse sectionalview of the centralfloor plate assembly illustrated in FIGURE 1;

FIGURE 18 is an elevational view of the bulkhead illustrated in FIGURE1;

FIGURE 19 is a sectional view of the structuure illustrated in FIGURE 18taken substantially along the line 19-19 thereof;

vFIGURE 2O is an elevation view of the bulkhead illustrated in FIGURE18;

FIGURE 21 is an enlarged broken elevational view of the portion of thestructure illustrated in FIGURE 18 indicated by the circle `21 with theouter facing sheet removed;

, FIGURE 22 is a sectional view of the structure illus- I trated inFIGURE 18 taken substantially along the line 22-22 thereof;

3 FIGURE 23 is a broken enlarged elevational view showing the bulkheadhandle construction illustrated 1n FIGURES l and 18;

FIGURE 24 is a sectional view of the structure illustrated in FIGURE 23taken substantially along the line FIGURE 26 is a broken verticalsectional view of the structure illustrated in FIGURE 25 takensubstantially along the line 26.--26 thereof;

FIGURE 27 is a front elevational view of a bulkhead operating handleembodying a modified construction;

FIGURE 28 is a side elevational view of the handle illustrated in FIGURE27;

FIGURE '29 is a front elevational view of a bulkhead frame structureembodying a modified construction;

FIGURE 30 is an edge elevational view of the bulkhead frame structureillustrated in FIGURE 29;

FIGURE 31 is a broken transverse sectional view showing a modified tloorplate construction mounted in an insulated railroad car;

FIGURE 32 is an enlarged broken transverse sectional view similar toFIGURE 31 but taken along aline spaced longitudinally ofthe car from theplane of FIGURE 31 to show the fastening means; and,

FIGURE 33 is an enlarged broken sectional view of the structureillustrated in FIGURE 3 taken substantially along the line 33-33thereof.

Whilel it will be readily appreciated by those skilled in the art thatthe improvements of the present invention may be readily embodied ina'wide variety of freight storage and transporting equipment, they are,for illustrative purposes and not in a limiting sense, disclosed,'in thepreferred embodiment illustrated and described herein, as embodied in arailroad refrigerator car.

Referring to the drawings, a railroad refrigerator car is generallyindicated at in FIGURE 1 and includes side walls 12 and 14, a floor 16and roofvstructure 18. Each side wall includes an outer skin 20,suitable insulation 22, an inside lining 24 of wood (see FIGURE 2), andside frame structure 26 upon which are supported the ceiling trusses 28of the roof structure. The floor lincludes a Hoor sheet 30 and a raisedrack floor 32 which is supported in the usual spaced relation thereaboveon the longitudinally extending I-beams 34. The above mentioned elementsof the refrigerator car 10 are of conventlonal construction and need notbe described in det-ail here.

In thepreferred. form of the present invention illus- 'trated anddescribed herein, a pair of crane rails 36 are mounted on the side walls12 and 14 adjacent the ceiling trusses 28 and extend longitudinally ofthe car. These crane r-ails 36 support a pair of trolley beams 38 and 40which extend transversely of the car and are movable longitudinally ofthe. car along the crane rails 36. The trolley beams 38 and 40 carrybulkheads 42 and 44, respectively. Each bulkhead is supported on itstrolley beam as hereinafter described, for free movement there-' along.and for free pivotal movement relative thereto. Each bulkhead 42 carriesa handle 46 operable for locking the bulkhead in desired adjustedpositions and for unlocking it and assisting in moving it. To accomplishthis locking in position, each bulkhead is provided with four cornerpins 48, and in the preferred embodiment illustrated, with a center pin50, all of which are operated by the handle 46. The door 16 is providedwith floor plates 52 and 54 extending longitudinally of the car adjacent'opposite sides thereof and `a central oor plate 56 which receive andco-operate with the lower bulkhead pins. The crane rails 36 receive andco-operate with the upper bulkhead pins.

vThe crane rails 36 are identical in construction and in their mountingin the car and accordingly, only one need be described in detail. Asbest illustrated in FIGURES 4 and 5, the crane rail 36, in the preferredembodiment illustrated, is of a fabricated construction and 'includes achannel 58 having anupper horizontal leg 60 which is. secured as bybolts 62 to a portion of each of theceiling trusses 18. Each channel 58also has a shorter lower horizontal leg 64 which carries a relativelyheavier plate 66 which is welded thereto. As is readily seen in FIG-URES 4 and 5, the crane rail 36 is disposed with the channel S8 thereofopening toward the interior of the car and it will be seen that theheavy gauge plate 66 carried by the lower leg 64 of the channel extendssubstantially beyond the leg 64 and has-a plurality of closely anduniformly spaced apertures 68 extending vertically through the portionthereof extending inwardly beyond the leg 64.

The third element of the fabricated crane rail 36 is an angle 70 havinga horizontal leg 72 welded to the web of the channel 58 in spacedrelation above the plate 66 and having a vertical leg 74 welded to theplate 66 in spaced relation to the web of the channel 58. The angle 70co-operates with the plate 66 and the web of the channel 58 to provide astrong box section and the horizontal leg 72 thereof has closely anduniformly spaced small apertures 74 throughout its length providing atrack for the trolley beam 38.

Support for the crane rail 36, in addition to that provided by the bolts62, is provided both at the ends and at suitable intermediate pointsalong its length. FIGURES 6 and 7 show the support at one end of one ofthe rails 36. A short channel section 76 extending vertically with itsweb engaging the side frame structure 26 above the inner wood lining 24,(see FIGURE 4) is secured thereto by a plurality of wood screws 78. Aconnector plate 80 extends across and is welded to the legs of thechannel 76 and is secured to the back of the web of the channel 58 bybolts 82. Intermediate the ends of the crane rail 36 the supportis alsoprovided by channel sections 76 secured to the side frame structures 26by screws 78 (see FIGURE 4) but at these points a smaller connectorplate 84 is used which extends across and is welded to the legs of thechannel section 76 below the screws 78 and is secured to the back sideof the web of the channel 58 by bolts 86.

To facilitate removal of the trolley beam 38, the crane rail 36 at oneor both sides of the car may be provided with a removable section suchas the one shown in full lines in FIGURE 8 and generally indicated bythe reference character 86. This removable section 86 has the plate 66and angle 70 extending beyond both ends of the channel 58 and is securedin place by screws 88 extending through the lower leg 64 of the channelof the adjacent fixed Sections o f the crane rail 36' and threadedlyengaging the plate 66. Additional support for the removable section 86is provided by plates 90 welded or otherwise secured to the back of theweb of the channels 58 of the adjacent fixed crane rail sections andextending behind the web of the channel 58 of the removable section 86.The removable section 86 is secured to the plates 90 by bolts 92.

The trolley beams 38 and 40 are identical in construe'- t1on andaccordingly, only the trolley beam 38 is illustrated and described indtail herein. The trolley beam 38, as is best illustrated in FIGURES 4,4A, 5, 7, 9, 10 and 11, is fabricated of a plurality of elementsincluding an elongated and generally square main frame in the form of atube 94 which is reinforced by a top plate 96 extending along and weldedto the top of the'tube 94 and extends laterally outwardly beyond thetube 94 at each side, as clearly illustrated in FIGURES 10 and 11. Thetube 94 also carries at opposite sides thereof, angles 98 welded theretoand providing roller tracks upon which the bulkhead 42 is supportedduring its movement along the trolley beam 38. The angles 98 are weldedto the tube 94 as indicated at 100 and 102. At its opposite rotatablysupport the opposite end portions of an elongated tubular shaft 106. Theopposite ends of the tubular shaft 106 receive stub shafts 108,thegouter end portions of which carry a hub inember 110 Welded theretoas indicated at 112 and which has a reduced outer end portion 114 uponwhich is receiveda sprocket wheel 116 which is welded thereto Vasindicated at 118, Each stub shaft S is connected to the tubular shaft106 for rotation there-' with by a key 120 (see FIGURE 4) which isreceived in a slot 122 inthe tube 106 and welded to the tube asindicated at 124` As there shown, the stub shaft 108 is provided with akeyway 126 which receives the key 120. By virtue of this construction,it will be seen that the stub shaft 108, illustrated in FIGURES 4 and 7,and the sprocket wheel 116 carried thereby are securedto the tubularshaft 106 for rotation therewith while leaving this stub shaft 108 andits associated sprocket Wheel 116 free to move axially relative to thetubular shaft 106. Preferably the corresponding stub shaft 108 (notshown) at the opposite endof the shaft 106 is pinned to the shaft 106 orotherwise secured against axial movement relative thereto.

As is clearly illustrated in FIGURE 4A, the shaft 106 has its endportion rotatably supported in the bearing casting 104 by a conventionalself-centering bearing compris-ing an outer bearing element 128 receivedin an outer bore portion 129 o f the bearing casting 104 and held inplace by a snap ring 130. This outer bearing element 128 has a.spherical inner surface 131 in which is seated an inner bearing element132 having a spherical outer surface 133. It will also be noted that theVshaft 106 has a reduced outer end portion 134 terminating at its innerend in an'annular shoulder 135 which engages the inner bearing element132. It will be appreciated that this construction both provides aself-centeringV bearing for the shaft 106 in the bearing castings 104 atthe opposite ends of the trolley beam 38 and also serves to preventmovement of the bearing castings 104 and tube 94 upon which they arecarried, axially relative to the tubular shaft 106. i

The bulkhead 42 is supported on the trolley beam 38 for movementlongitudinally thereof by a carriage assembly generally indicated at140, which consists of a bracket 142 secured to the top edge of thebulkhead 42, and a yoke 144 pivotally connected to the bracket 142 andcarrying rollers 146 which are supported on and adapted to roll alongthe roller tracks 98 of the trolley beam 38. In the preferred embodimentillustrated, as shown in FIGURE 12, the cylindrical rollers 146 aremounted on ball bearings 148. The yoke 144 has a central portion 150which extends below and-transversely of the trolley' beam 38 and hasspaced vertical arms 152 which support inwardly extending horizontalshafts 154 upon which the rollers 146 are mounted.. As can clearly beseen in FIGURE 13, each arm 152=of the yoke 144 carries a pair ofhorizontally spaced rollersv 146 and accordingly, it will be appreciatedthat' the weight of the bulkhead 42 is distributed between four rollers146 supported on .and rolling along the tracks 98. The central portion150 of the yoke has a stepped central aperture 156 in which is receiveda shoulder bolt 158 having a head 160 and a cylindrical shaft portion162 which are received in the stepped aperture 156 and having a threadedlower end portion 164. v

The bracket 142 is generally C-shaped and includes a base portion 166which is secured to the top edge ofthe bulkhead 42 by a plurality ofbolts 168.- The bracket 142 also includes a generally verticalfportion170 which is offset from the center line of the bulkhead 42 so that itis disposed adjacent but spaced inwardly of one face of the bulkhead 42.The bracket 142 also includes a horizontal supporting arm 172 which isprovided with a central tapped opening 174 which receives the threadedlower end 164 of the bolt 158. To securely hold the bolt 158 againstbecoming unscrewed from the bracket 142, the threaded lower end 164 ispreferably welded to the bracket arm 172, as indicated at 176. Tofacilitate the making of this weld, the base portion 166 of the bracket142 is provided with a central aperture 178 aligned with the aperture174.

To insure ease of turning of the bulkhead 42 and the Y bracket 142connected to the upper edge thereof, relative to the yoke 144, a thrustwasher 180 is provided between the head 160 of the bolt 156 'and theyoke 144.

Referring to FIGURE 5, it will be seen that the above describedconstruction of the carriage means 140 for supporting the bulkhead 42 onthe trolley beam 38 has the important advantage of enabling theVbulkhead 42 to be positioned closely adjacent the side wall or, asillustrated in this figure, the door 182. It will be seen that when thebulkhead is disposed parallel to the side wall (0r door) and movedclosely adjacent thereto, the plate 66 of the crane rail 36 extends intothe C-shaped bracket 142 between the base portion 166 and the upperhorizontal supporting arm 172 thereof.

As previously indicated, the pins 48 at the lower comers of the bulkhead42 engage in iioor plates generally indicated at 52 and 54. These oorplates extend along in parallel and closely spaced relation to theopposite sides 12 and 14 of the car and only one of these floor plateassemblies need be described in detail. The floor plate 52 isillustratedin detail in FIGURES 14, 15 and 16. Since the center floor plate 56diffe-rs slightly from the side oor plates 52 and 54, the constructionof this center door plate 56 is illustrated in FIGURE 17.

Referring to FIGURES 14, 15 and 16, the present invention contemplatesthe 'modification of the generally conventional refrigerator car o'orconstruction there illus trated, by cutting away a portion4 of theconventional rack floor construction 32 adjacent the inner face of theinner car lining 24 to permit the mounting of the iioor plate structure52. This structure includes a plurality of anchor plates which aresecured in place on the upper surface of the oor plate 30 by anchorbolts 192. These anchor plates 190 carry upwardly extending studs 194welded 'to the upper surface thereofwhich extend upwardly through feetplates 196 which extend laterally outwardly at the bottom of thegenerally channel shaped floor plates 52. In the preferred embodimentillustrated, these floor plates 52 are of a fabricated constructiondisposed with the open side of the vchannel opening downv wardly asclearly illustrated in FIGURE 16 and'include spaced parallel verticallydisposed leg plates 198 extending upwardly from the feet 196 andcarrying a horizontally disposed heavier gauge plate 200, the uppersurface of which is ush with the upper surface of the rack floor 32.This plate 200 is provided with a plurality of apertures' 202 uniformlyspaced longitudinally thereof for receiving the pins carried at thelower edge of the bulkhead 42.

The space between the plate 200 and the adjacent side wall lining 24 istilled by a wooden floor strip 204 which is supported at a plurality ofpoints spaced along the floor plate 52 by support plates 206. Thevarious plates constituting the feet 196, the legs 198 and thehorizontal pin receiving plate 200 are welded together and the supportplate 206 is also welded to the side plate 198. The wood floor strip 204is secured to the support plate 206 by a stud 208 extending-` upwardlyfrom and welded to the upper surface ofthe support plate 206 and a nutmember 210 threadedly received on the upper end of the stud and receivedin a -counterbore 212 provided in theV upper surface of the wood strip204. At the opposite side of the floor plate structure 52, that issecured to the leg 198 which is remote from the side wall lining 24,there is, at a plurality of points spaced along the floor platestructure 52 a hinge structure consisting of a pair of plates 212extending laterally outwardly from the leg 198 and spaced longitudinallythereof and interconnected by a hinge bar 214 extending therebetween andwelded thereto. These hinge bars 214 provide a pivotal support for therack floor 32 which is connected thereto by strap hinges 7 216 (SeeFIGURE 16) to permit the section of the rack loor 32 between the sideoor plate structure 52 and the center oor plate structure 56 to behinged upwardly to permit access to the space below it for cleaningpurposes. As illustrated in FIGURE 16, the strap 216 is U-shaped andtits over the hinge bar 214. In the construction illustrated this strap216 is welded to a `supporting angle 217 mounted on the adjacent edge ofthe rack floor 32 and the open side of the U-shaped strap 216 is closedby a bolt 218 which may be removed if it is desired to completely removethe floor section 32. c

`The center floor plate structure generally indicated at 56 is similarto the floor side plate structures 52 and 54.

It includes a plurality of longitudinally spaced anchor plates 190secured in place by anchor bolts 192 and carrying studs 194 welded toand extending upwardly from the 'upper surface thereof and throughlaterally outwardly extending plates 196 constituting the feet of thechannel shaped Hoor plate structure 56 which again includes leg plates198 and an interconnecting horizontally disposed plate 200 also providedwith longitudinally spaced apertures 202. It will be noted that in theoor plate struclture 56 the apertures 202 are centrally located whereasin the floor plate structures 52 and 54 the pin-freceiving apertures 202are, in the construction illustrated, otset from the center of the plate200. The central floor plate structure 56 includes a pair'of angles 220secured to the opposite sides thereof and adapted to support theinneredge of the t-l'oor racks 32.

The conventional refrigerator car floor structure illus- `trated andindicated generally at16, inaddition to the movable rack floor sections32 and the floor plate 30, also includes a wood door structure 222immediately below the oor plate 30. It will be appreciated from acomplete understanding of the present invention that the major loadsimposed upon the oor plate structures 52, 54 and 56 Aare horizontal andare imposed, for example, in bumping of the car as during starting,stopping and switching of the car. At such times the load tends to shiftagainst the bulkhead and movement thereof is resisted by the pins 48 and50 which extend into the apertures 202 in the tIoor plate structures. Toco-operate with the anchor bolts 192 in holding the anchor plates 190against horizontal movement during such shock loads, a plurality ofshear screws 224 are provided which extend downwardly through the feet196, the anchor plates 190, the floor plate 30 and into the wood oorstructure 222. This is best illustrated in FIGURES 14 and 16 which showthe side oor plate structure 52. It will, however,

be appreciated that shear screws 224 are also employed in the centralfloor plate structure 56 and the other -side floor plate structure 54.

The construction of the bulkhead 42 is best illustrated in FIGURES 18 to24, inclusive. In the preferred ernbodiment illustrated, to keep theweight of the bulkhead to a minimum, a framework of aluminum tubing ofsquare cross section is employed and is covered at the opposite faces ofthe bulkhead with sheet aluminum. The above mentioned framework includesa pair of vertical parallel frame elements 230 interconnected at theirtop by a horizontal tubular aluminum frame member 232 and interconnectedat their lowerends by a horizontal aluminum tubular frame member 234. Atthe center of the bulkhead are a pair of vertical frame members 236extending between the upper and lower frame elements 232 and 234 andspaced apart as best illustrated in FIGURE 18.

At opposite sides of the bulkhead are diagonally extending frame members238 having their upper ends connected to the top frame member 232adjacent the side frame members 232 and having their lower endsconnected to the bottom frame member 234 adjacent one of the centralframe members 236. Also, each side of the bulkhead includes ahorizontally disposed upper frame brace 240 extending between andconnected to a central frame member 236 and the diagonal 238 and asecond short horizontally disposed frame brace 242 aligned with thebrace 240 and extending between and connected to the diagonal 238 andthe side frame member 230. Each side of the bulkhead also includesahorizontally disposed lower frame bruce 244 spaced above the lower framemember 234 and extending between and connected to the diagonal 238 andthe side frame member 230. Each of the frame members above mentioned is,in the preferred embodiment illustrated, formed of extruded aluminumtubing of square cross section and the connections between the framemembers are made by welding. The bulkhead framework also includes thefollowing. additional frame elements which are formed of extrudedaluminum tubing of rectangular cross section having a greater dimensionequal to the dimension of the above mentioned frame members of squarecross section and having a lesser dimension equal to approximatelyonehalf that of the greater dimension. These additional frame elementsprovide additional reinforcement and strength to the bulkhead frame andinclude frame elcments 246 extending along and welded to the side frameelements 230 between the upper braces 242 and the lower braces 244 anddiagonal bracing elements 248 extending along and welded to the innerside of the diagonal frame members 23S from apoint below the upper framebraces -240 to a point below the lower frame braces 244. Each side ofthebulkhead also includes a vertically disposed frame brace element 250spaced outwardly of the central frame member 236 and extending betweenand connected to the top frame member 232 and upper frame brace 240.Each side also has a horizontal frame brace element 252 spaced below theupper brace 240 and extending between and connected to the central framemember 236 and the reinforcing frame element 248 extending along andwelded to the diagonal 238.

Another horizontal frame brace element 254 is aligned with the element252 and extends between the diagonal 238 and the reinforcing element 246welded to the side frame member 230. Each side of the bulkhead alsoincludes two additional vertical parallel bracing elements 256 whichextend between the lower frame member 234- and the lower frame bracemember 244. Each face or the frame structure is covered by a pair ofspaced sheets of aluminum 258 and a central sheet or strip of aluminum260, all of which are suitably secured to the frame members as by spotwelding, puddle welding, screws, rivets, or the like.

As illustrated in FIGURES 18 and 19, the bulkhead includesat each sidethereof an opening extending therethrough provided with a hand grip bar262 which may be readily grasped by a worker from either side of thebulkhead to assist in moving the bulkhead into place. In theconstruction illustrated, this hand opening is disposed above thehorizontal frame brace element 254 adjacent the diagonal 238.

The corner pins 48 are mounted in the opposite ends of the verticalframe members 230 and are operated through linkage disposed within theframe members 234 and best illustrated in FIGURES 20 and 22. The pins 48at each corner of the bulkhead 42 are mounted for vertical slidingmovement in a guide block assembly, best illustrated in FIGURES 25 and26, and generally indicated at 264. Each guide block assembly consistsof an outer guide block 266 and an inner guide block 268 spaced from theouter guide block 266 and connected thereto by a guide sleeve 270 whichmay be welded at its ends to each of the guide blocks 266 and 268. Thepins 48 and the parts 266, 263 and 27) of the guide block assembly arepreferably formed of steel and are held out of contact with the aluminumframe member 230 within which they are disposed by suitable plasticshims 272 to prevent electrolytic action. Each guide block assembly 264is securely held in place by eight screws 274 which extend through thesides of thc frame member 236 and the shims 272 and into the guideblocks 266 and 268 as illustrated. The heads of these screws are Hushwith spaced parallel central frame members 236. The .pins

48 are rectangular in cross section as shown in FIGURE 25 and are freelyslidable within the guide block assembly 264. As shown in FIGURE 26, thepins 48 have a reducedcircular outer end 275 adapted to be received inthe floor plate apertures 202.

i The handle 46 which, as mentioned earlier, operates all of the pins 48and 50 is connected at its inner c nd to a horizontal main operatingshaft 276 which extends through'land is rotatably supported insuitablebearings 278 mounted in the frame brace elements 246. The opy positeends of the shaft 276 are disposed within the side frame members 230 andcarry crank elements 280 iixed thereon. The linkage within the sideframeV members 230 for operating each of the corner pins 48 is substan.tially identical and each includes a link 282 having one end pivotallyconnected to the crank 280 and ,having its other end pivotally connectedto a short lever 284 near the center thereof. As illustrated in FIGURES20 and 22, one end of the short lever 284 is pivotally connected to abracket 286 xed within the-,frame member 230 as by rivets 288. The otherend of the short lever 284 is pivotally connected to one end of a link290, the other end of which is pivotally connected to the inner end ofthe pin 48. In order to provide the necessary adjustment of the linkage,each of the links 290 includes a conventional means indicated at 292 foradjusting its length. At the opposite edges of the bulkhead 42 the outerwalls of the vertical frame members 230 are provided with elongatedopenings 293 providing access to the interior of the frame member 230for necessary Work on or adjustments of the linkage housed therein. Thecenter pin 50 is operated by a crank 294 which is fixed on the mainshaft 276 adjacent the connection of the handle 46 thereto in the spacebetween the central frame members 236. This crank 294 operates thecentral pin 50 through'a linkage generally indicated at 296 which issimilar to that above described through which the crank 280 is connectedto and operates the pins 48. The linkage 296 also includes aconventional means indicated at 298 for adjusting the length thereof.

At each Vface of the bulkhead 42 the center aluminum sheet 260 has anopening 299 therein permitting access to the handle 46 from either sideof the bulkhead and permitting the handle to be swung outwardly ineither direction. The above described connections 'between the handle 46and the pins 48 and 50 are so adjusted that with the handle 46 in theposition illustrated in FIGURES 2 and 18, in which it is disposedcompletely within the bulkhead, all of the pins 48 and 50 are in anextended position and the weight of the bulkhead is at least partiallysupported on the lower pins 48, which, as best shown in FIGURE 26,' areprovided with a downwardly facing shoulder 277 which, when the handle 46is in the position illustrated in the drawings, engages and is supportedon the upper surface of the oor plate structure, around 'the'aperture202 in which the pin end 275 1s received. In the preferred embodimentillustrated, when the handle 46 is at right angles to the face of thebulkhead 42 all of the pins 48 and 50 are in their retracted positionsand withdrawn into the bulkhead. The construction, arrangement andadjustment of the above describedlinkage is preferably such that uponmovement of the handle 46 downwardly toward the position illustrated inthe'drawings from the above mentioned position at 'right angles to thebulkhead, the center pin 50 moves outwardly ahead of the corner pins andmay be engaged in one of the oor plate apertures 202 to provide an axisabout which the bulkhead may be pivotally moved prior to outwardmovement of the corner pins 48 sufficiently to engage either the floorplates or the crane rail plates 66. Upon continued movement of thehandle 46 toward the position illustrated in which it is disposedin theplane of 'and within the bulkhead 42, the lower corner pins 48 are movedinto the apertures 202 in the oor plates and the upper corner pins. 48are moved into the apertures 68 in the crane rail plates 66. The finalmovement of the handle 46'to this position raises the bulkhead slightly,thereby relieving the load otherwise'r transmitted through the carriageassembly to thetrolley beam 38. The

position assumed by the parts under this condition, exaggerated forpurposes of illustration, is clearly shown in FIGURE 1l in which it willbe noted that the rollers 146 of the carriage assembly 149 are raisedolf of the roller track 98 of the trolley beam 38.

Referring to FIGURES 2l, 23 and 24, the handle which is gentrallyindicated at 46 includes a short inner end section 300 which isapertured to receive a square section 302 of the cross shaft 276 topositively connect the handle 46 to the shaft 276 for rotationtherewith. The handle also includes an outer end section 304 which ispivotally connected to the inner end section 300 by a pivot pin 306which extends at right angles to the shaft 276. be appreciated that thereason for forming the handle 46 in the two sections 300 and 304 is toenable use of the handle when the space at the accessible side of thebulkhead yis insucient to permit normal operation of the handle with itsfull length extending at right angles to the bulkhead. Because of thepivotal connection provided by the pin 306, the outer section 304 vmaybe turned to the degree required by the space limitations and stillpermit operation of the handle to extend and retract the pins 48 and 50.This enables the operator to load-both ends of the car and position andlock the bulkheads although the nal space between them may be of theorder of one foot. In the preferred embodiment illustrated the outerhandle section 304 includes a spring pressed detent or pin 308.'` (SeeFIGURES 23 and 24.) At its outer or lower end mounted in the bulkhead 42at the bottom of. the opening 299 is a short horizontal bar section 310having a central slot 312 disposed at the center of the bulkhead and inthe convex outer surface 314 of the bar section. With 1this constructionit will be seen that as the handle 46 is pushed into the position shownin FIGURE 24, the pin 308 will ride up the convex surface 314 at oneside of the slot 312 and drop into the slot 312 as the handle reachesthe position illustrated. The pin 308 is yieldably urged to the extendedposition illustrated by a spring 316 encircling theV pin 308 and oneendof which engages a fixed-abutment 318 secured in the outer handlesection 304 by screws 320, and the other end of which engages anabutment 322 fixed on and movable with the pin 308. Outward movement ofthe pin 308 under the influence of the spring 316 is limited by atransverse pin 324 extending through a transverse hole in the inner endof the pin 308 and engaging the inner side of the abutment 318 in theextended position of the pin 308. The outer section 304 of the handle 46is provided with openings 328 permitting access to the interior of theouter section 304 so that one may insert his ngers therethrough andengage the channel shaped movable abutrneiit 322 to retract the pin 308against the pressure ol'` the spring 316. In the embodiment illustratedin FIGURES 23 and 24 pivotal movement of the outer handle section 304relative to the inner handle section 300 about the pivot pin 306 isyieldably resisted by a friction element 328 mountedin the inner handlesection 300 and pressed against the outer handle section 304 by a setscrew 330.

It is an important feature of the present invention that, as shown inFIGURES 3 and 33, the refrigerator car floor 16 is provided adjacenteach dorway opening with auxiliary floor plates 400 adapted to receivethe locking pins 48 and 50 at the bottom of the bulkhead. Since these nwill y the car and arc disposed parallel to and in closely spacedrelation to the adjacent one of the side tioor plate structures 52 and54. As shown in FIGURE 3 there are three of these plates 400 at cachside of the car and they are spaced to receive and support the ends ofthe pins 48 and 50 at the bottom of the bulkhead. The plates 400 arcreceived in recesses 404 provided in the rack fioor 32 and securedinplace by a plurality of screws 406.

The above described construction enables the bulkheads 4Z and 44 to bestored across one doorway of the carwhile leaving the opposite doorwayand both ends of the car unobstructed tor loading the car. Duringtransporting of the car when empty the bulkheads 42 and 44 arepreferably disposed transversely of the car as shown in FIGURE l oragainst a side of the car as shown in FIGURE 2 so that all four cornerpins 48, aswell as the center pin S will be operative to support thebulkheads against movement longitudinally of the ca r and so that thepins 48 and 50 at the bottom of the bulkheads will be supported by thestronger and better anchored oor plate structures 52, 54 and 56 ratherthan by the auxiliary floor plates 400.

When it is desired to load a car equipped with the freight bracingapparatus of the present invention, the

bulkhcads 42 and 44 are first moved from their empty car transportpositions, such as shown in FIGURES 1 and 2, to the positions'illustrated in FIGURE 3 in which they are disposed across the doorwayopening which will not be used in loading the car. The-handle 46 isfirst pivoted outwardly to a position at right angles to the face ot`.the bulkhead. The initial portion of this movement, in retracting thelower corner pins 48 lowers the bulkhead so that it is completelysupported on its trolley beam 3S or 40 by the engagement of the bulkheadcarriage rollers 146 with the roller track flanges 98 of the trolleybeam. The completion of the movement of handle 46 retracts all of thepins 4S and 50. The bulkhead is now free to move transversely of the caras the rollers Il() roll along the trolley beam flanges 98. The bulkhead.may also now be moved longitudinally of the caras the trolley beam uponwhich it is supported moves along the crane rails 36. ley beam is heldagainst cooking, that is, is held at right angles to the car by theengagement of the teeth of the trolley beam sprocket wheels 116 in thecrane rail apertures 74. It will be appreciated, of course, that whenthe bulkhead 44 is in the position illustrated in FIGURE 3 the upperends of the corner pins 48 at the top of the bulkhead are not engaged inany supporting structure. During the movements of the bulkhead thehandle 46 serves Vas a lever facilitating the turning and positioning ofthe bulkhead.

When the loading of each end is completed, a bulkhead is moved againstthe load and locked in place by the pins 48 and 50 and, as pointed outabove, when finally locked in place, the bulkhead is slightly raised bythe bottom corner pins 48 so that during transit of the car the trolleybeams are relieved of the load of the bulkheads.

.Although the construction illustrated and described above includes thecenter locking pin 50, it will be appreciated that the construction maybe modified to omit the center pin 50, its operating crank 294 andlinkage 296, the center floor plate structure 56, and the middle ones ofeach group of three of the auxiliary floor plates 400.

A modified construction which may be employedl for thc handle assemblyis illustrated in FIGURES 27 and 28.

The handle 46' there illustrated similarly includes an in- During thismovement the trolsection 300'.

ner handle section 300' and an outer-handle section 304 and differs fromthe handle 46 previously described primarily in the means for resistingpivotal movement of the outer handle section 304' relative to the innerhandle In place of the friction element 328 and the set screw 330 urgingit into engagement with the outer handle section 304, the handleassembly 46' includes a rod 332 mounted within the outer handle section304' and having its outer end welded to a channel shaped guide 334slidable within the handle section 304'. Its inner'end is slidable in abore 336 provided centrally of a yoke shaped hinge member 338 at theinner end of i the handle section 304' which yoke shaped member fits thebulkhead frame structure.

over the tongue 340 of a hinge member 342 at the outer end of the handlesection 300. vided with three bores 344, provided in the outer surfacethereof and adapted to be aligned with the bore 336. The three bores 344are angularly spaced and disposed so that when the outer handle section304' is aligned with the inner handle section 300', the rod 332 mayextend into the central one of the bores 344 and when the outer handlesection 304' extends at right angles to the handle section 300' the rod332 may extend into another of the bores 344. In this embodiment theabutment 318', rather than being fixed in the handle section 304', iswelded to the movable guide 334 for movement therewith and a suitablepin 346 extends transversely of the handle section 304 in a position tobe engaged by the spring abutment 322' to limit movement of the pin 308'outwardly of the-handle section 304'. Also, in the handle assembly 46',in addition to the openings 326', through which one may engage theabutment 322' to retract thev pin 308', the handle section 304' also isprovided with openings 348 through which one may engage the movableguide 334 to withdraw the rod 332 from the one of the bores 344 in whichit is received. It will be noted that in this construction the spring316 acts both to urge the pin 30S' outwardly and to urge the rod 332inwardly into one of the bores 344. With this construction, when thehandle is in the straight position with the rod 332 received in thecentral bore 344, the handle 46 may be used as a lever to turn thebulkhead, whereas in the previously described embodiment when this isattempted, only a limited force may be exerted before the outerhandlesection 304 'will pivot about the pivot pin 306, the force exertedthen being sufficient to overcome the frictional force opposing suchmovement provided by the friction element 328.

FIGURES 29 and 30 show a modified frame structure for the bulkheadadapted to provide substantially increased strength. In these figuresonly the frame structure is shown and the outer skin or sheets ofaluminum are omitted to more clearly show the frame structure. In themodified construction illustrated in these figures the frame structureincludes side frame members 230', a top frame member 232 and a bottomframe member 234. Each of these frame members, as well as the additionalframe members provided 'in the modification illustrated in these iguresare preferably formed of extruded aluminum tubing of square crosssection, the same as in the frame structure of the previously describedbulkhead 42. In the frame structure illustrated in FIGURES 29 and 30there is provided at the bdttom a pyramid of frame members 350, 3 52 and354. As illustrated, the frame member 3S0.extends the full distancebetween the side frame members 230 and is in abutting relation with thebottom frame member 234. The frame members 352 and 354 are progressivelyshorter, the frame member 352 overlying the central portion of the framemember 350 and the frame member 354 overlying the central portion of theframe member 352. Corresponding frame members 350', 352' and 354' aresimilarly disposed at the top of The frame structure also includesadditional vertically disposed frame members disposed at equal intervalsbetween the side frame mem- The tongue 340 is pro-A 13 bers 235V. Thevertical frame members 356 extend bctwcen horizontal frame members 350and 350 at the ends of the horizontal frame members 352 and 352 and thevertical frame members 358 extend between the horizontal frame members352 and 352 at the ends of the frame members 354 and 354'. The verticalframe members 366 extendbetwcen the horizontal frame members 354 and354.

In addition to the main frame members above described, the structureillustrated in FIGURE 29 also nincludes hand grips 262' which are,suitablyrnounted between the framemembers 356 and the side framememinsuring that the support for the shaft 276 will be pro-` vided bythe bearing blocks 366..

FIGURES 31 and 32 illustrate the installation of a 'modified floor plateconstruction in an insulated car as distinguished from the refrigeratedcar construction illus- Atrated in the embodiment rst described. Inthese figures the conventional wood floor 372 is cut out as indicated at374 to receive a fiat floor plate`54' provided with apertures 2.02adapted to receive the lower end portions 275 of the pins 48 and 50 atthe lower edge of the bulkhead 42; Aligned with this opening 202' in theplate 54' is a recess 376 to prevent interference between the lower endportions 275 of the pins and the oor 372. To securely hold' the plate54' against movement relative to the floor 372 in response to the heavyload transmitted to the plate 54by the bulkhead pins, a plurality ofanchor elements 378 are provided. These anchor elements are generallycylindrical in shape but have an outwardly ared conical upper endportion 38) adapted to seat on a similarly shaped conical surface 382provided in the upper portion of an aperture 384 provided in the floorplate 54 and adapted to receive the anchor element 378. Each of theanchor elements 378 is securely held in place by a screw 336'extendingcentrally through the anchor element 378 and threaded into the woodiloor372. The cylindrical anchor element 378 extends substantially belowthe plate rd' and into a recess 388 provided in the floor 372. It willthus be appreciated that these anchor elements 378 provided a large arcaengagement with the wood oor 37?. f or resisting movement of the floorplate S4 relative to the iloor 372. Except for the provision of the oorplate 5-3' and the r'ccessing of the floor 372 to receive this plate andthe anchor elements 378 and screws 386,

Y 1. In a freight carrying vehicle 'having a floor and opposed lsidewalls, a bulkhead movable between a plurality of selected positionswithin said vehicle, locking pins carried by said bulkhead at the topand Abottom thereof, rail members mounted on and extendinglongitudinally of said vehicle adjacent the top of said bulkhead, atrolley beam, said rails supporting the opposite ends of said trolleybeam for movement longitudinally of said vehicle, said rails also havingmeans spaced therealong for FIGURE 29 also illustrates bearing blocks366- cooperation with the ones of said locking pins at the top of saidbulkhead for holding said bulkhead-in said positions, and carriage meanssupporting said bulkhead on said trolley beam and bodily movablelongitudinally of said beam for moving said bulkhead longitudinally ofand parallel to said beam, said trolley beam includin'ga roller trackextending longitudinally thereof, said carriage means including rollersengaging said track and supporting said carriage means on said beamforrolling move'- ment therealong, said means on said rails comprising lhorizontally disposed flanges extending inwardly into said vehicle fromadjacent each of said side walls and said carriage means including aC-shaped bracket secured to said bulkhead and adapted to fit over saidflanges to enable said bulkhead to be disposed under said flanges inpositions parallel and closely adjacent to each of said sidewalls.

2. The combination defined in claim 1 wherein said l C-shaped bracketincludes a lower generally horizontal arm secured to thetop of saidbulkhead and a generally vertically extending support section offsethorizontally from the center of said bulkhead.

3. In a freight carrying vehicle having a floor and opposed side walls,a bulkhead adapted to extend transversely of said vehicle to bracefreight and having vertically extending pins at the upper cornersthereof movable upwardly for use in securing said bulkhead in desiredadjusted positions, rail members mounted on and extending longitudinallyof said vehicle adjacent the top of said bulkhead and each including aplate portion extending inwardly' from the adjacent wall above saidbulkhead and having apertures adapted to selectively receive said pinsat the upper corners of said bulkhead, each of said rail members alsohaving a track extending longitudinally of said vehicle, a` headerextending transversely of said vehicle and adapted to support saidbulkhead, co-operating means on the opposite ends of said header and onsaid rail member tracks mounting said header on said rail members formovement longitudinally of said vehicle, other co-operating means onsaid header and on said bulkhead mounting said bulkhead on said headerfor rotary movement relative thereto and for movement longitudinally ofsaid header, said last named means including a C-shaped bracket securedto said bulkhead and adapted to receive said plate portion to permitsaid bulkhead to be disposed in a position in which it is closelyadjacent either one of said side walls when said bulkhead extendslongitudinally of said vehicle and has beenmoved -longitudinally of saidheader to one limit of its travel relative thereto.

4. A rail assemblyfor a freight bracing apparatus for a freight carryingvehicle, said rail'assernbly being of generally uniform cross sectionthroughout itslength and including an upper section adapted to besecured tosaid vehicle to support said rail assembly thereon, said railassembly also including a lower horizontally extending section having aplurality of apertures spaced along the outer portion thereof adapted toreceive co-operating locking pins forming a part of said freight bracingapparatus, an angle extending along and welded to said'v upper and lowersections and co-operating therewith'to provide a box cross section, saidangle having a vertical flange extending at right angles to said lowersection with its lower edge welded thereto inwardly of said aperturestherein and having a horizontal flange extending in spaced parallelrelation to said lower section and having its edge welded to said uppersection, saidhorizontal flange having a plurality of apertures uniformlyspaced therealong and being adapted to provide a supporting track for asprocket Vwheel forming a part of said freight bracing apparatus.

-5. A fabricated rail assembly for a freight bracing apparatus for afreight carrying vehicle comprising an elongated C-shaped channelformedof relatively thin miaterial and including a lower horizontal leg, ahorizontal anchor plate overlying said lower leg and secured to said`vertically upwardly from said plate inwardly of said Iapertures andwelded to said plate and having its other leg extending horizontally inspaced parallel relation tosaid plate and having its edge welded to saidchannelso that said angle cooperates with said plate and said channel toprovide a box cross section, said horizontal leg of said angle .having aplurality of apertures closely and uniformly spaced .therealong 6. Atrolley beam for a freight bracing apparatus including a pair ofhorizontally spaced and parallel supporting rails each having a sprocketwheel track extending longitudinally thereof, said trolley beamcomprising an elongated rectangular metal tube, an elongated metal plateoverlying and secured to the top of said tube and having outer marginalportions extending laterally beyond said tube, an angle at each side ofsaid tube having one leg extending along and secured tov theside wallofsaid tube and having its otherA leg extending outwardly at rightangles to said tube in spaced parallelrelation to Vsaid marginalportions of said plate and adapted to co-operate therewith to receiverollers therebetween and provide a trackway therefor, sprocket wheels atopposite ends of said beam, and adapted to be supported onand roll alongsaid sprocket wheel tracks, means mounting said sprocket wheels on saidbeam for rotation relative thereto and for axial movement relative toeach other and interconnecting said sprocket wheels to hold saidsprocket Wheels against rotation relative to each other,. said lastnamed means including a tubular shaft extending' through said tube,self-centering bearings at opposite end of -said tube supporting saidshaft against axial movement relative thereto and for rotation relativethereto, means rigidly connecting one of said sprocket wheels to one endof said shaft and means connecting the other of said sprocket wheels tothe other end of said shaft for rotation there with and for axialmovement relative thereto.

7. In a freight bracing apparatus a frame structure for a bulkheadadapted to engage and support freight, said framestructure comprisingtop, bottom and side frame members rigidly secured together, a lowerpyramid structure comprising a plurality of horizontal frame membersstacked with their centers one above the other and of progressivelydecreasing lengths, means rigidly secur- -ing said members of saidpyramid structure together and to said bottom frame member, and aplurality of spaced frame members parallel to said side frame membersand secured to the members of said pyramid structure, all

' of saidframe members being disposed in the same plane,

an upper and inverted pyramid structure comprising a plurality ofhorizontal frame members stacked downwardly from said top frame memberand with their centers one below the other and of progressivelydecreasing lengths, and means rigidly securing said frame members ofsaid upper pyramid structure together and to said top frame member,corresponding frame members o f said upper and lower pyramid structurebeing of the s'ame lengths and said members parallel to said sidemembers being substantially equally spaced.

8. In a freight carrying vehicle having la oor and opposedside walls, abulkhead adapted to extend transversely of said vehicle andsubstantially completely across said vehicle to brace freight, saidbulkhead having means for holding it in desired positions relative tosaid vehicle and including vertically extending pins at the lower edgethereof at the corners and at the center thereof, co-operating meanssupported on said side walls supporting said bulkhead on said side wallsfor movement longitudinally and transversely of said vehicle and forrotary movement between positions transversely of said vehicle andpositions parallel to said side walls, door anchor plates mounted on andextending llongitudinally of said oor and having apertures therein forreceiving said pins to support said bulkhead in a plurality of positionsspaced longitudinally of said vehicle, and means for moving said pinsinto and out of engagement with said floor plates, said last named meansincluding a handle mounted on said bulkhead and movable between lockedand unlocked positions and means operatively connecting said handle tosaid pins and effective upon movement from said unlocked position towardsaid locked position to move said center pin into an aperture of thecenter oor anchor plate before the corner pins are moved into theapertures of 934,933 9/09 Posson 292`218 1,092,014 3/14 Briggs '287-991,631,127 6/27 Haseltine -292-218 1,991,818 2/35 Nissen 105-1502,121,288 6/.38 Gilpin 105-410 2,155,463 4/39 Angell 105-376 2,160,8706/39 Jones 10S-376 2,220,436- -11/40 Ziegler, 105-376 2,360,029 10/44Wieden 10S-376 2,414,160 1/47 Moon 10S-369 2,482,855 9/49 Lloyd 105--1502,543,143 2/51 Wells et al. 105-376 2,752,864 `7/56 McDougal et al.105--376 2,866,419 12/58 Candlin 10S-376 2,875,707 3/59 MacDonnell105-376 2,905,107 -9/59 Nichol 105-369 2,911,925 1l/59 Adler et al.105--376 3,017,842 1/62 Nampa 105-376 3,017,843 1/62 Loomis et al105--376 3,018,741 1/62 Loomis et al 105-376 MILTON BUCHLER, PrimaryExaminer.

JAMES S. SHANK, LEO QUACKENBUSH, EUGENE G. BOTZ, Examiners.

1. IN A FREIGHT CARRYING VEHICLE HAVING A FLLOR AND OPPOSED SIDE WALLS ABULKHEAD MOVABLE BETWEEN A PLURALITY OF SELECTED POSITIONS WITHIN SAIDVEHICLE, LOCKING PINS CARRIED BY SAID PIN BULKHEAD AT THE TOP AND BOTTOMTHEREOF RAIL MEMBERS MOUNTED ON AND EXTENDING LONGITUDINALLY OF SAIDVEHICLE ADJACENT THE TOP OF SAID BULKHEAD, A TROLLEY BEAM, SAID RAILSSUPPORTING THE OPPOSITE ENDS OF SAID TROLLEY BEAM FOR MOVEMENTLONGITUDINALLY OF SAID VEHICLE, SAID RAILS ALSO HAVING MEANS SPACEDTHEREALONG FOR COOPERATION WITH THE ONES OF SAID LOCKING PINS AT THE TOPOF SAID BULKHEAD FOR HOLDING SAID BULKHEAD IN SAID POSITIONS, ANDCARRIAGE MEANS SUPPORTING SAID BULKHEAD ON SAID TROLLEY BEAM AND BODILYMOVABLE LONGITUDINALLY OF SAID BEAM FOR MOVING SAID BULKHEADLONGITUDINALLY OF AND PARALLEL TO SAID BEAM, SAID TROLLEY BEAM INCLUDINGA ROLLER TRACK EXTENDING LONGITUDINALLY THEREOF, SAID CARRIAGE MEANSINCLUDING ROLLERS ENGAGING SAID TRACK AND SUPPORTING SAID CARRIAGE MEANSON SAID BEAM FOR ROLLING MOVEMENT THEREALONG, SAID MEANS ON SAID RAILSCOMPRISING HORIZONTALLY DISPOSED FLANGES EXTENDING INWARDLY INTO SAIDVEHICLE FROM ADJACENT EACH OF SAID SIDE WALLS AND SAID CARRIAGE MEANSINCLUDING A C-SHAPED BRACKET SECURED TO SAID BULKHEAD AND ADAPTED TO FITOVER SAID FLANGES TO ENABLE SAID BULKHEAD TO BE DISPOSED UNDER SAIDFLANGES IN POSITIONS PARALLEL AND CLOSELY ADJACENT TO EACH OF SAID SIDEWALLS.